"Wanna sign a contract with me to become that destined one?" Devil Jekaterina is summoned and saved by a cultivator girl Yuchi Yue. To Yue surprise, the first thing Jekaterina wants to do when she wakes up is to ask her sign a contract with her with a kiss? "Kissing on the lips is the thing that can only be done between those who likes each other!", Yue shouts and refused. But it seems that Jekaterina doesn't understand what does she mean...